STM32H7 Flash Memory Problem

[Freedom_Neo]

I load the program to the STM32H7B3IIT6 MCU, but when I close the circuit and open it again, the program inside does not work. I did not make any changes to the parameter settings.

[TDK]

Verify the memory contents with STM32CubeProgrammer. If it matches what should be there, the problem is that user code is not starting (or there's a bug in it). Verify configuration is set to boot to user flash with current BOOT pins and option byte settings.

Custom board? Is BOOT0 pulled low?

[Freedom_Neo]

I can read memory contents with STM32CubeProgrammer. The program appears to be installed.

I am not making any adjustments. I am using it with default settings. It works fine with STM32H7B3LIH6QU MCU.

BOOT0 has been pulled down.